Radio Base Station and a Method Therein

A method in a radio base station for providing radio coverage to a user equipment, which radio base station comprises at least two radio antenna ports, including a first antenna port associated with a first physical antenna, which first antenna port is arranged to provide a radio coverage over a first area, and a second antenna port associated with a second physical antenna and which second antenna port is arranged to provide a radio coverage over a second area, the method comprising:

• broadcasting a signal with system information over the first area via the first antenna port thereby enabling the radio base station to connect to the user equipment;
• determining that a user equipment in the first area has data to receive or transmit;
• obtaining information related to a position of the user equipment in the first area;
• and
• setting a characteristic of the second physical antenna based on the obtained information, thereby providing radio coverage to the user equipment via the second antenna port.

A radio base station for providing radio coverage to a user equipment, the radio base station comprising:

• at least two radio antenna ports, including a first antenna port associated with a first physical antenna, which first antenna port is arranged to provide a radio coverage over a first area, and a second antenna port associated with a second physical antenna and which second antenna port is arranged to provide a radio coverage over a second area;
• a broadcasting circuit configured to broadcast a signal with system information over the first area via the first antenna port enabling the radio base station to connect to the user equipment;
• a determining circuit configured to determine that a user equipment in the first area has data to receive or transmit;
• an obtaining circuit configured to obtain information related to a position of the user equipment in the first area;
• and
• a setting circuit configured to set a characteristic of the second physical antenna based on the obtained information to provide the radio coverage to the user equipment via the second antenna port.